Painted Tooth Centered In Timing Window; Timing Mark On Rotor Aligned With Pointer - Piper PA-44-180 SEMINOLE Maintenance Manual

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RED PAINTED TOOTH
Figure 74-6. Painted Tooth Centered
in Timing Window
11. Attach red lead from the 11-9110 timing light to the left switch adapter lead, the green timing light lead to
the right switch adapter lead and the black timing light lead to the magneto housing. (Refer to Figure 744.)
An internal timing tolerance is allowed when adjusting the two main breakers.
Therefore, one of the main breakers may open slightly before the other. Magneto-to-
engine timing should be accomplished using the first main breaker to open as a
reference point when the engine is in the firing position for the No.1 cylinder. This
will insure that ignition created by either spark plug will not occur prior to the desired
engine firing point.
12. If both timing lights are ON (indicating breaker contacts are closed) proceed to Step 13. If either or both are
OFF proceed as follows:
A. Turn the entire magneto to the right until both timing lights are ON.
B. Ensure that the red painted distributor gear tooth is still visible in the timing hole.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
— Note —
3G1
240
Figure 74-7. Timing Mark on Rotor
Aligned with Pointer
7 4 - 11 - 0 2
Page 74-08
Revised: May 15, 1989